From mboxrd@z Thu Jan 1 00:00:00 1970 From: Santosh Shilimkar Subject: Re: [PATCH 2/3] mtd: davinci-nand: add dts property for NAND_NO_SUBPAGE_WRITE option Date: Thu, 20 Mar 2014 13:37:42 -0400 Message-ID: <532B2766.6090506@ti.com> References: <1395335184-4745-1-git-send-email-ivan.khoronzhuk@ti.com> <1395335184-4745-3-git-send-email-ivan.khoronzhuk@ti.com> <532B2183.2080309@ti.com> <20140320172912.GW31517@norris-Latitude-E6410> Mime-Version: 1.0 Content-Type: text/plain; charset="ISO-8859-1" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <20140320172912.GW31517@norris-Latitude-E6410> Sender: linux-doc-owner@vger.kernel.org To: Brian Norris Cc: Ivan Khoronzhuk , dwmw2@infradead.org, galak@codeaurora.org, robh+dt@kernel.org, pawel.moll@arm.com, mark.rutland@arm.com, ijc+devicetree@hellion.org.uk, rob@landley.net, linux@arm.linux.org.uk, grygorii.strashko@ti.com, devicetree@vger.kernel.org, linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-mtd@lists.infradead.org, Murali Karicheri List-Id: devicetree@vger.kernel.org On Thursday 20 March 2014 01:29 PM, Brian Norris wrote: > On Thu, Mar 20, 2014 at 01:12:35PM -0400, Santosh Shilimkar wrote: >> Boris, > > Who's Boris? And why should Boris be taking this patch? It's an MTD > patch. > I got your name completely wrong. Sorry.... >> On Thursday 20 March 2014 01:06 PM, Ivan Khoronzhuk wrote: >>> From: Murali Karicheri >>> >>> After testing NAND flash with ubifs for k2hk-emv board were committed >>> that flash doesn't support subpage writing, so we can fix it by >>> adding a property to disable subpage write. > > What flash? We try to autodetect NAND as much as possible. Perhaps we > should be adding infrastructure support instead of hacking it with a DT > property. > We can't auto detect it and thats why the DT approach was taken. We will double check that. >>> Signed-off-by: Murali Karicheri >>> Signed-off-by: Ivan Khoronzhuk >>> --- >> Can you please pick this up for 3.15 fixes ? Ofcourse assuming DT folks >> are ok with the patch. >> >> I can then take patch 1/3 and 3/3 in my 3.15 fixes queue. >> >>> Documentation/devicetree/bindings/mtd/davinci-nand.txt | 2 ++ >>> drivers/mtd/nand/davinci_nand.c | 3 +++ >>> 2 files changed, 5 insertions(+) >>> >>> diff --git a/Documentation/devicetree/bindings/mtd/davinci-nand.txt b/Documentation/devicetree/bindings/mtd/davinci-nand.txt >>> index cfb18ab..50af930 100644 >>> --- a/Documentation/devicetree/bindings/mtd/davinci-nand.txt >>> +++ b/Documentation/devicetree/bindings/mtd/davinci-nand.txt >>> @@ -53,6 +53,8 @@ Recommended properties : >>> identifier is saved in OOB area. If not present >>> false. >>> >>> +- ti,davinci-nosubpage-write: disable subpage write for the device > > If we really need the DT property, I'd prefer a generic > "nand-numer-of-partial-programs" or something like that, and if it's > equal to 1, then the flash doesn't support partial page programming. > OK. It can be updated as you suggested. Thanks for quick response and sorry for the rename Regards, Santosh